CVE-2014-4655
MEDIUM severity · CVSS 4.9 · Integer overflow
4.9CVSS MEDIUM
Summary
The snd_ctl_elem_add function in sound/core/control.c in the ALSA control implementation in the Linux kernel before 3.15.2 does not properly maintain the user_ctl_count value, which allows local users to cause a denial of service (integer overflow and limit bypass) by leveraging /dev/snd/controlCX access for a large number of SNDRV_CTL_IOCTL_ELEM_REPLACE ioctl calls.
Impact & exploitability
Attack vectorLocal
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impactNone
Integrity impactNone
Availability impact—
Exploit probability (EPSS)0%
AV:L/AC:L/Au:N/C:N/I:N/A:C
Affected products we track (2)
Recommendation
Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.15.2Advisory
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=82262a46627bebb0febcc26664746c25cef08563
- http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.htmlAdvisory
- http://rhn.redhat.com/errata/RHSA-2014-1083.htmlAdvisory
- http://secunia.com/advisories/59434Advisory
- http://secunia.com/advisories/59777Advisory
- http://secunia.com/advisories/60545Advisory
- http://secunia.com/advisories/60564Advisory